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Performing measurements
A General
A1 Measuring leads
The test leads supplied with the measuring instrument must be
used for all measurements except AC and DC current. For AC cur-
rent measurements, the test leads must be removed from the mea-
suring instrument.
A2 HOLD function
To hold a measured value (e.g. when writing a report), operate the
"H HOLD" button (above the rotary switch) once. As a result, the
instantaneously-measured value becomes "frozen". The corre-
sponding "HOLD" symbol appears in the upper left of the display.
To release the measurement again, press the "HOLD" button once
more. As a result, the symbol disappears and the instantaneous
measured value appears immediately.
A3 MAX Function
For maximum value measurements (rising currents, etc.), operate
the "M MAX" button. As a result, only the highest yet occurring
measured values will be displayed. Additionally, the "MAX" symbol
can be seen in the display. To leave the maximum value function,
operate the "M MAX" button anew.
A4 ZERO
The ZERO button is used (only) with DC current measurement to
set zero before starting the measurement. For this, press the "ZE-
RO" button once. As a result, the display should indicate "00.0".
During this adjustment, no conductor may be inside
the current clamp. During the adjustment, the
clamp may not be close to a magnetic interference
field (e.g. loudspeakers, electrical machines, etc.).
38
En bas de la "pince" se trouve un protège-mains, un
bourrelet en plastique. Ne mettez/portez pas les
mains, pendant la mesure / ou lors de la mise en
place de la pince sur le câble conducteur ou le rail
conducteur, au-delà du protège-mains - DANGER
DE MORT !
Ne mesurez jamais du courant d'un circuit électri-
que avec des tensions supérieures à 1000 VDC ou
750 VACrms : sinon vous risquez d'endommager le
multimètre et vous serez même en danger de mort.
Mesurez en aucun cas des courants supérieurs à
1000 A.
F Mesure de résistance
Assurez-vous que tous les branchements et élé-
ments à mesurer ainsi que tous les objets à mesu-
rer sont absolument bien hors tension.
Pour mesurer des résistances, procédez comme suit :
1. Raccordez le câble de mesure noir à la douille COM (au milieu)
et le câble rouge à la douille "HzOhm->I-" (à gauche).
2. Positionnez l'interrupteur rotatif sur "400ohms".
3. Vérifier les connexions des câbles de mesure en reliant les deux
broches de mesure entre elles. A la suite de quoi, une valeur de
résistance d'env. 0 ohm devra s'ajuster.
4. Enfin raccordez les broches de mesure avec l'objet à mesurer. La
valeur de mesure sera affichée, pour autant que la résistance à
mesurer soit inférieure à 399,9 ohms.
Remarque !
Si vous faites une mesure de résistance, assurez-vous que les
zones à mesurer, qui sont au contact des broches de mesure,
soient exemptes d'encrassement, d'huile, de vernis de soudure
67
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